After reviewing the graph you posted above, the one mineral in this rock sample that can scratch the mineral olivine is called quartz and also garnet can scratch it.
<span>Angel Falls (Salto Ángel)</span>
Answer:
B. three
Explanation:
We live in a 3d world and 4d and 2d wouldnt make sense.
Answer:
Hydrogen in the core of the star is converted to helium by nuclear fusion. When the hydrogen supply in the core begins to run out, and the star is no longer generating heat by fusion, the core becomes unstable and contracts.